<!DOCTYPE HTML>
<html>
	<head>
		<meta charset="utf-8"/>
		<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
		<meta name="HandheldFriendly" content="true"/>
		<meta name="MobileOptimized" content="320"/>
		<title>Hello H5+</title>
		<script type="text/javascript" src="../js/common.js"></script>
		<script type="text/javascript" >
// H5 plus事件处理
function plusReady(){
	// 锁定只能竖屏显示
	plus.screen.lockOrientation( "portrait-primary" );
}
if(window.plus){
	plusReady();
}else{
	document.addEventListener("plusready",plusReady,false);
}
// 解锁并关闭
var _back=window.back;
function unlockback(){
	plus.screen.unlockOrientation();
	_back();
}
window.back=unlockback;

var t, x;
var ld;
var tran="0.1s", empty="0s";
var bani=false, bsp=true;
function update(d) {
	var c = ld - d;
	var ac = Math.abs(c);
	if (ac <= 1) {
		return;
	} else if (ac > 180) {
		if ( bani ) {
			t.style.webkitTransitionDuration = empty;
		}
		ld = (c > 0) ? ld - 360 : ld + 360;
		t.style.webkitTransform = "rotate(" + (bsp?(-ld):(ld)) + "deg)";
		setTimeout(adjust, 1);
	} else {
		t.style.webkitTransform = "rotate(" + (bsp?(-d):(d)) + "deg)";
	}
	ld = d;
	var r = Math.round(d);
	var txt = "";
	if (r >= 338 || r < 23) {
		txt = "北";
	} else if (r < 68) {
		txt = "东北";
	} else if (r < 113) {
		txt = "东";
	} else if (r < 158) {
		txt = "东南";
	} else if (r < 203) {
		txt = "南";
	} else if (r < 248) {
		txt = "西南";
	} else if (r < 293) {
		txt = "西";
	} else {
		txt = "西北";
	}
	x.innerHTML = txt + r + "°";
}
function adjust() {
	if ( bani ) {
		t.style.webkitTransitionDuration = tran;
	}
	t.style.webkitTransform = "rotate(" + (bsp?(-ld):(ld)) + "deg)";
}
function gohome() {
	plus.webview.currentWebview().close();
}
document.addEventListener("plusready", function() {
	t = document.getElementById("compass");
	x = document.getElementById("inf");

	if ( plus.os.name == "iOS" ) {
		t.style.webkitTransition = "all 0.1s linear";
		bani = true;
		if ( plus.device.model.indexOf("iPhone") < 0 ) {
			bsp = false;
			document.getElementById("tip").innerText = "此设备方向数据不准确";
		}
	}
	plus.orientation.watchOrientation(function(r) {
		update(bsp?r.trueHeading:r.alpha);//update(r.alpha);
	}, function(e) {
		// error
	}, {
		frequency : 100
	});
}, false);
// Adjective select.
document.onselectstart = function() {
	return false;
}
		</script>
		<link rel="stylesheet" href="../css/common.css" type="text/css" charset="utf-8"/>
		<style type="text/css">
#front {
	width: 100%;
	height: 40px;
	text-align: center;
	margin-top: 30px;
}
#container {
	width: 80%;
	position: relative;
	margin: auto;
	margin-top: 10px;
	text-align: center;
	line-height: 100%;
	overflow: hidden;
}
#bg {
	width: 100%;
	position: absolute;
	left: 0px;
	top: 0px;
	z-index: -1;
}
#compass {
	width: 100%;
	vertical-align: middle;
    /*
	-webkit-transition: all 0.1s linear;
	-moz-transform: rotate(45deg);
	-webkit-transform: rotate(45deg);
	-o-transform: rotate(45deg);
	-ms-transform: rotate(45deg);
	transform: rotate(45deg);
	*/

}
#inf {
	width: 100%;
	height: 40px;
	line-height: 40px;
	font-size: 32px;
	font-weight: bold;
	text-align: center;
}
a.bh {
	width: 100%;
	height: 40px;
	position: fixed;
	bottom: 0px;
	background: rgb(128,128,128);
	text-align: center;
	line-height: 32px;
}
a.bh:active {
	background: rgb(64,64,64);
}
#hi {
	width: 32px;
	height: 32px;
	vertical-align: middle;
}
		</style>
	</head>
	<body>
		<header id="header" style="position:static">
			<div class="nvbt iback" onclick="back()"></div>
			<div class="nvtt">指南针</div>
		</header>
		<div id="front">
			<img style="height:100%;" src="../img/orientationa.png"/>
		</div>
		<div id="inf">
			北0°
		</div>
		<div id="container">
			<img id="bg" src="../img/orientationbg.png"/>
			<img id="compass" src="../img/orientationc.png"/>
		</div>
		<div id="tip" style="width:100%;position:absolute;bottom:0;text-align:center;color:red"></div>
	</body>
	<script type="text/javascript" src="../js/immersed.js" ></script>
</html>